Curved Shell Ring

There seems to be an error in the formula for B.  If you can enlighten me to where it is wrong, please comment below.


Create a model of the curved shell ring shown.  Build the model such that no matter what dimensions are given for L and Theta, the model will oriented with the Absolute CSYS at its center of mass.

Verify that the center of mass is:

Xcbar, Ycbar, Zcbar   =   -0.00000000000,    0.00000000000,    0.00000000000

For several values of R and R1.